Is this a good bug or bad?

[Danyboy]

My live rock has many many of this things and I kill a lot of them but there is no end to them.
I just want to know if they are good for reef tank or not?

 

[chandavi]

Don’t see “things”.

 

[sixty_reefer]

Chiton they good clean up crew and very desired by manny in the hobby as they can only be found as hitchhikers, putting your finger in a unknown critter is not safe, some hitchhikers can sting you quite badly.

 

[Danyboy]

Don’t see “things”.

 

[Danyboy]

Chiton they good clean up crew and very desired by manny in the hobby as they can only be found as hitchhikers, putting your finger in a unknown critter is not safe, some hitchhikers can sting you quite badly.

Its dead It came off a frag I deep.
If anyone wants I have a lot

 

[Remy123]

Just a harmless chiton. Will help eat algae in your tank